Germany's Bureau of Aircraft Accident Investigation says in an Interim Report that the downlock pin was missing in the June 4th Lufthansa 787-9 nose-gear collapse accident at Frankfurt Airport. Two technicians sat in the pilot seats were conducting a test to resolve an open complaint regarding the control system for the main landing gear doors at the time. During the test, the landing gear lever should be set to “UP”, among other things. At about 10:45 UTC, immediately after the landing gear lever had been activated, the nose landing gear retracted and the aircraft’s front fuselage impacted the ground. After the impact, the cockpit door slammed shut. At the same time, the power and the lighting went out. After the BFU consulted with the airport operator and the individual companies involved, a total of 34 individuals directly involved were identified. Twenty eight persons were in the airplane’s cabin. Five ground handling services members were outside the airplane, one technician was at the nose landing gear. There were 2 serious and 21 minor injuries. After the aircraft had been lifted up, the BFU documented that the landing gear downlock pin was not inserted into the designated hole on the nose landing gear and was not in the vicinity of the nose landing gear either. The nose landing gear was secured with the landing gear downlock pin found in the avionic compartment and the aircraft taken to a hangar for further examination. Full report: bfu-web.de/EN/Publications/I…